US3624010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone foams
Assignee: General Electric Co
•
Filing: 1970-02-12
•
Granted: 1971-11-30
•
Expires: 1990-02-12
Abstract
Abstract An organopolysiloxane foam is made by mixing a carboxyalkylpolysiloxane, a diisocyanate and a tertiary amine; allowing the composition to foam; then curing the foamed composition. The foamed product makes an excellent thermal barrier, electrical insulator and shock absorbing mounting for electronic circuits.
Inventors
- 👤 Norman G Holdstock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:03
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/61; C08G18/615; H01B3/46; C08G2110/00; C08G2110/0008; C08G2110/0025; Y; Y10; Y10S; Y10S528/00; Y10S528/901
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
10 words
The method of claim 1 in which R is methyl.
Claim 2
Dependent Claim
12 words
The method of claim 1 in which the diisocyanate is toluene diisocyanate.
Claim 3
Dependent Claim
13 words
The method of claim 1 in which n has a value of two.
Claim 4
Dependent Claim
19 words
The method of claim 1 in which R is methyl, the diisocyanate is toluene diisocyanate, and n is 2.
Claim 5
Dependent Claim
18 words
The method of claim 5 in which the tertiary amine is composed only of carbon, hydrogen, and nitrogen.
Claim 6
Dependent Claim
39 words
The method of claim 1 in which the diisocyanate is present in an amount sufficient to provide about one isocyanate group per carboxyalkyl group in said carboxyalkylpolysiloxane and in which said tertiary amine is present in a catalytic amount.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |